Starting device for internal combustion engines



April 18, 1933. e. BECKER "1,904,117

STARTING DEVICE FOR INTERNAL COMBUSTION ENGINES Filed Jan. 5, 1932 I VlIiNTdK gm Maw Patented Apr. 18, 1933" UNITED 1 ieaisninnmucxnn, 'onnnnLrn-onnnnorrnmsnneienmity 1 1 smgmemvmmon INTERNAL COIQIIBUSTIONENiNES;J Q1

Application filedileniiery fi, 1932, were; sa4,s4 9, ege 1;e r a fiv v nibg ta ;.195 f 1 concentrically .ar'ound end parallel. to vthe shaft and openedfiandclosed positively the1cam-p1ate and control mechanism which automatically and positively controls 7 the shifting (if-the cam plate'into;the;operat1ve andinoperative positions Preferably this i" revolutions ofthe-engine, releases the can; plate whichi'is heldin; its operative position h during the" start ing; operation, so 'thet it can be moved exi'ally into its inoperative positionout' of reach of thelvalves. Convenient-J 1ythis release is efi'eoted through the agency of'ainut traversing a threaded'spindle. The released cam-plate will move back by spring force into its'inoperative'position. By this means th'evoperaitive connection between the cam-plate and control valves is discontinuedand the control valves, acting automatically and independently. of the pressure of the pressure fiuid, out ofi thefurthersupply of the fluid. At the seinetimethe'nnt, with the aid of a stop ajls o arrests the-control mechanism. For "re-starting, the cani plate g is returned to theoperative position by man ually winding back the nutiinto the position in which it'holds the"e amp1ate,' so that,

the re establishme'n-t of'the o erative' connec-j tion between the cam -plate and va'1ves,'the starting operation is initiated directly and 4 without the opening of a'separate cut-01f cock built on toltll.

, l m ed in-lthisjfigure i, 7: control mechanism; after a certain number Details of the invention are ldescribed be low with reference to thefdrevvingvvherein; like parts are indicated With jthe same refer-v 61106 um a in thi ldifie entfigur Iw Figure'jliis al'si'de elev tion of an'internal Combustion .en m'q 'Wit h1.a start in d ce "FigureQ'is e o'ngitu inn Statenthrough 1 the starting .device,' the cam-plate being in l 1ts operative positi on and. the nutin its ex; treme position fat the comme'n'cement of the starting oper'zttio n v y j Fi'gure '3 is theseme longitudinal section} a sjFigure 2' but shows thefully inoperative condition of the devioe, thenut being in eo ts other extrenie position and-the cam plate in its lnoper'ative position hilst the drive for the control mechan'ismj, is also dise'n gztged. The handfcrank for: restarting". is

The in ern o us iq en m m y of jeny'des red construction?The flmgedl. 011 1115;v 3 ofthestarting deviceis conven iently secured coe'xiallywith the engine cam-shaft 2, Thepressure fluid is lcontained in a vessel 21: landfills; the pressurechamber. 6 of the distributor 7 throu'gh e tub'e :5. 1 i orma lly,' thepre ssure fluid fiscut ofi' by the valves. 8,: there being a number of these} 7 corresponding tothe number. of cylinders When the distributor-is set in operetion the. pressurefluidflows, under the control of thevalves 8, through thefstarting tubes 9- tothe individual cylinders. which i's'then infits operative position as, shown in Figure 2 is driven from the engine Cami-shaft 2 (Figured), through the sha ft 7 ll, by the'feeth'eror key and is axially slidableion the shaft 11 in the direction of lift 'the'valveses-iwhich are r g d on e 010112 centric lcir'c'le' eround'th shaft- 11 sollthat 7.

they p n and closein the axial direction of i Said shaft. y y

' Through Wheels I 14;tl1e shaft '11 ialso'drive's a threaded spin ivw P te 10,

dle 16 which is secured againstaxial movement by collars 15 and on which a nut 17 is traversed. The clutch 14: is only effective in the driving direction of'rotation and serves as a non-return device for protecting the nut 17 when it abuts against'the collar 22. The end portions of the movements of the nut on the spindle 16 are transmitted through rods 18, 19, connected by a lever 20, to a toggle linkage 21. Figure 2 shows the nut 17 in position against the shaft-collar 22 at the commencement of the starting operation. It is holding the toggle linkage 21 inits looked position by means of a stop 23 on the rod 18. In turn the toggle linkage holds the camplate 10 in itsiope'rative position by 'means of collars on a pin 24. To retain the toggle linkage in this position'g the red 18 is provided 2 with a spring 26 acting upon a stop 25.

travels along the threaded. spindle-16 120- wards "the extreme positibnluillustrated in Figure 3; It thus encounters the stop-2 and,

through the linkage 18, =19, 20, draws ,the toggle linkage out; of its locked position,

so "that the cam-plate- 10' returns to its inoperative positionagainst the collar29 underv the pressure of the spring 27 assisted;- by 30 the closing-springs 28'on the valves 8. In

their; springs and' t he. pressure fluid is cut .The Hu 7 nfl untering, the stop-125 alsof moves, through, aistopf 30, ,an arm 31 whereby the gearwheelf13, which" is axially sildable, is 'brought'out of engagement with the driving wheel 12. The' .spindle,16, together with the nut 17, comes to a standstill;

The-spring 27, which becomes operative at toothed wheel 13'is ensured' The returnoi thecam-plat'e 10 op-.f

erative position shown-in'Figure2 is efl'ected by, turning the spindle 16 backwards :by

- means of "a crank handle 32having a crown-. wheel 33 whichyon the insertion of the han-f dlef iii-the bore 34," engages with a' toothed wheel35 on the shaft 16. By this means the nut 17 is returned from "the position of Figs. ure'3 towards'the stop 28, whereby it pressesthe toggle linkage 21 intofits locked posi:

Q5 tion,'as shown in Figure 25 The collar22 restrictsjthe return movement of theme-'17,. The insertionlofthehan'dl'e,32 temporarily prevents engagement; of toothed wheel 13 with the driving wheel 12.. 11 1 11. withdrawalofthe handle 32, tlie spring 36 is. for operating said. valves in succession, a.

for movingthe wheel 13 into engagement. a The controlfmechanism described representsonly one ofthej 'variousg arrangements this manner, all thevalves8 areclo'sed by possible for the automatic displacement of the cam plate. What is of primary importance for the invention is that after a predetermined number of revolutions, or at a predetermined revolution speed, of the engine, the driving means for the distributor is automatically disengaged. It should, therefore, be expressly observed that the invention is not to be regarded as restricted to this constructional form selected for the purpose of furnishing explanation.

1. Starting device comprising means for distributing gaseous pressure fluid to the cylinders of an internalicombustion engine, said distributing means consisting of a'plu- "ra'lity of valves, a drivingshaft, a cam plate 7 I y I n V rotatable by said shaftengageable with said During the starting operation" the nut '17 valves for actuating the" same in "succession, selfglocking means for,mainta1n1 ng said cam plate n an operativeposit on foractuating said valves,..means for displacing said camplate axially on the shaft-to an inoperative position, and a release devi cegactuated from the cam plate to the inoperativepositionf 2. Starting device according to claimf 1, wherein the release,device comprises a threaded spindle, means Tfori driving said spindle from the shaft, a. traversing-nut on said spindle, stop devices engageable by said nut in its traversing movement and an operative connection between said stops'and the self-locking means, said self locking means'being moved into and out of the lock- 11 g; position under the control "of the nut.. 3. Fluid pressure starting device for in-v ternal'combustion engines, comprising a plurality of fluid-distributing valves, a cam for, actuatingfsaid valves,fa driving shaft upon which said cam is axially shiftable: into and out of engagement with said valves, mechanism for so, shifting said cam, .a threaded spindle, a disengageable driving gear between said' spindle and shaft, a traversing nut onthespindle, said nut being engageable with said mechanism for controlling the axe. ial shiftingof the cam, and a gear shifting device controlled by the nut fer eifecting the engagement and disengagementiof the driv inggear at thesame time as that of the cam, I A. Starting device accordingto' claim 3, a one-way 'clutchfdevice being provided be-- tween the driving gear. and the threaded spindle for the'p fl'POse set forth,

' 5 .Fluid pressure start ng device for an internal combustion engine comprising a plurality of fluid-distributing; valves, a cam driving shaft upon. which said cam is axialthe driving shaftior releasing the: self lock-j the clearest possible ing means to p'ermitof'the displacement of means including a time-lag device driven by said shaft and operatively connected with said cam-shifting mechanism to effect disengagement of the cam from the valves.

6. Starting device according to claim 5, wherein a disengageable driving connection is provided between the shaft and time-lag device, and means operable by the cam-shifting mechanism for disengaging said driving connection when said mechanism is operated to disengage the cam from the valves.

' GABRIEL BECKER. 

